From precipitation to vesicles: a study on self-organized assemblies by alkylammonium and its mixtures in polar solvents

Authors :: Zhang, X.-R.
Huang, J.-B.
Mao, M.
Tang, S. H.
Zhu, B.-Y.
Source :: Colloid & Polymer Science; 20011201, Vol. 279 Issue: 12 p1245-1249, 5p
Publication Year :: 2001
Abstract: Abstract: The formation of self-organized assemblies by C<subscript>n</subscript>H<subscript>2n+1</subscript>NH<subscript>2</subscript>·HCl and C<subscript>12</subscript>H<subscript>25</subscript>SO<subscript>4</subscript> Na in polar solvents was studied. By adding 1-propanol or 2-propanol, the precipitation formed in aqueous solution was resolved and a bilayer structure was discovered. Furthermore, multilamellar vesicle formation could be observed by methods of adjusting the molar ratio of C<subscript>n</subscript>H<subscript>2n+1</subscript>NH<subscript>2</subscript>·HCl to C<subscript>12</subscript>H<subscript>25</subscript>SO<subscript>4</subscript>Na, changing the length of the hydrocarbon chain of C<subscript>n</subscript>H<subscript>2n+1</subscript>NH<subscript>2</subscript>·HCl, or adding 1-octanol to the mixed surfactant systems.

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